7th Cir.: Although it is "close to the edge," the 4th Am. does not prohibit DEA agents from driving around Chicago clicking the button on a garage door opener they have seized to figure out which door it would open. 
7th Cir. said that driving around clicking the garage-door opener is a 4th Am. search, but it was a reasonable one because it "produced only an address, not any meaningful private information about the interior or contents of the garage."
But the court says this might come out differently if the feds used a clicker to open a private garage and found something incriminating.
For the same reason, the 7th Cir. says agents didn't violate the 4th Am. by trying out a key on different mailboxes in a condominium building to see which one it opened.
here's the link: media.ca7.uscourts.gov/cgi-bin/rssExe…
